Belt-gearing for drill-presses and the like.



-.l. G. HEY.

BELT GEARING FOR DRILL PRESSES AND THE LiKE.

APPLICATION FILED JULY 13, 1914. 1,148,6Wo Patented Aug. 3, 1915.

3 SHEETS-SHEET I.

J. G. HEY.

BELT GEARING FOR DRILL PRESSES AND THE LIKE.

APPLICATION FILED JULY 13. 1914.

1 148 677} Patented Aug. 3, 1915.

3 SHEETS-SHEET 2.

i jjzamzan- COLUMBIA FLANDDRAPH COHWASHINUTON, D. :4

J. G. HEY.

BELT GEARING FOR DRILL PRESSES AND THE LIKE.

APPLICATION FILED JULYI3, 1914.

1,148,677. Patented Aug. 3, 1915.

3 SHEETSSHEET 3.

rs: Z?

COLUMBIA PLANOGRAPH co.,W/\sHlNuTON, D. (:4

JOHN G. HEY, on CINCINNATLNOHIO, ASSIGNOR T0 OINe NNATi-PULLEYMAOHiNERY COMPANY, OF CINGINNATI, 01-110, A con'rom'rion.

BELT-surmise FOR DnILL-rREssEs AND THE LIKE;

A p-plimtion fi lezi July 13, 1914. Seriab N0. 850,750.

To all whom it mag concern Be it known that 1, JOHN HEY, a citizen of the United States, and a resident of Cincinnati, Ohio, have inventedcertain new and useful Improvements in Belt-Gearing for Drill- Presses and the like. K

The invention relates t'o-beltgearing for drill presses and like machines, andseeks:to provide a simple, effective construction which can be easily and readily adjusted todrive the drill spindle at different speeds through the medium of -asingle, quarterturn belt.

The invention oonsists' of the features of improvement hereinafter set forth, illus trated in the preferredform in the accompanying drawingsand more particularly pointed out in the appended claims In the drawings, Figure 1' is a view in" elevation of a drilling machine embodying the present invention Fig. 2 a vertical section of the machine. Fig. 3-is a View in rear elevation of the: support whereon the idler pulleys: are mounted. Fig'.:4 is a; plan view of the upper portion of the machine frame. Figs. 5, 6, 7' and 8'a'reihorizontal secof Fig. 2.

The machme 1 frame comprises a lower por-' tion 1, which is provided with'anadjustable" wise of the machine, is; journale'd 'in: the

bracket. The counter-shaft 5 is driven: from any suitable source of power.v In the 0011- struction shown, it isprovided with tight and loose pulleys 6 and 7', so that-the machine may be connected by means of a: belt to a suitable drive shaft. The machine 1s thrown into" and out of operation by shift= ing the drive belt either onto the tight pulley 6 orthe loose pulley' 7 For this'purpose a suitable belt shifter is mounted upon the bracket '4, and comprises a slidably mounted rod 8 carrying belt engaging fingersor arms9' onone-endthereof, a shift lever 10 being connected to the sliding rod' by a link machine-is fixed to the counter-shaft'5,and

Specification of LettersPat'ent.

11.- A driving pulley 12 for the Patente'd'Aug. 3, 1915.

this pulley preferably hasbut a single face and is flanged as shown.

The: upright frame or standard 3 is provided at its upward end with forwardly progecting arms 13, which are provided with bearingsle for thevertical drillspin-x die 15 A multiple-stepped cone pulley 16 is mounted on the drill spindle between the bearings 14*. This pulley is preferably provided with four steps so that the drill spindle may be-driven at four different speedsfrom the; drive pulley 12 on the countershaft. The spindle is vertically shiftable as usual through the bearings-14' and conepulley 16.

A sleeve 17' mounted on the spindle is connectedby a chain 18 with counter-balancing weight 19: within" the hollow pedestalor standard 8', the chain passing over suitable guide pulleys 20;-

Asupport-ing bracket-21 for the's1eevef17 is adjustably clamped the usual manner upon a guide 22 at the front of pedestal or standard- 3. H with a feed shaft 23 havinga pinion 24L thereon which engages a rack 25 fixed to the sleeve-17.-

A quarter-turn belt 26 connects the drive pulley 12 011 the counter-shaft 5 with the stepped driven pulley 1-6onthe spindle and will properly track with any of the four steps of the cone pulley 16,- and means is also provided for adjusting" at. least one of the idler pulleys, and preferably both, to

properly tension thebelt. For this: purpose the brackets 29' whereon' the idler pulleys 27' and 28' are journaled are secured to the" ends ofa horizontal sliding. carriage 30.

The'brackets'29 preferably fit upon theend bars of the'c'arriage 30, and are rigidly secured? thereto by bolts 31. The. carriage is The bracket- 2l is provided mounted to slide horizontally in suitable guides32 formed upon the upper edges of the side portions of a triangular bracket or support 33. The bracket or support 33 is in the form of a hollow casting and is' mounted to slide vertically upon a guide 34 at the upper rear portion ofthe stand 7 ard 3.

The vertical feed screw 35 is journaled its lower end in a rearwardly projecting lug 36 on standard 3. The screw extends upwardly between the side portions of the bracket or support 33 and engages two threaded sleeves 0r nuts 37 which are fixed within openings in a pair of lugs 38 that project rearwardly from the front wall of the bracket 33. A horizontal adjusting shaft 39 extends from front to rear through the standard 3 and is journaled in suitable bearings carried by the standard. Its rear end extends through a vertical slot 40 in the front wall of the bracket 33 and a pair of beveled gears 41 connect the rear end of the adjusting shaft 39 to the feed screw 35. The front end of the shaft 39 is provided with a hand-wheel 42 within convenient reach of the" operator, so thatthe screw 35 may be readily rotated to adjust the support or bracket 33 in vertical direction. By thismeans'the idlers 27 and 28 may be adjusted vertically as indicated in dotted lines in Fig. 2, to cause the belt to track with any one of the steps of the cone pulley l6,

- and thereby rotate the spindle at four different'rates of speed.

In order that the portion of the belt between the multiple-stepped pulley 16 and the return idler 28 shall properly track with the latter, a vertical guide roller 43 is j ournaled in suitable bearings in the arms 13 of j the standard 3 and is arranged to engagethe return portion of the-belt as it leaves any idler pulleys 27 and 28 and the arrangement is such that the flat quarter-turn belt 26 will always track with the guide pulleys and with the different steps of thedriven pulley l6.

To place the belt under proper tension the carriage 30 is adjusted upon the guides 32 by. a horizontal feed screw 45, which is jour' naled in a bearing at. the front edge of the bracket or support 33 and engages a threaded sleeve or nut 46 fixed to the front portion of the carriage 30. The front end of the shaft 45 extends through a slot the coupling shaft 49 is connected by a universal joint 50 to a horizontal adjusting shaft. The latter is formed of telescoping sections and comprises an inner section 51 connected directly to the joint 50 and a tubular section 52 to which theinner section is keyed. The tubular section is journaled in suitable bearings formed upon a member 53 secured tothe lower arm 13 of the pedestal'3. A crank or hand-wheel 54 is fixed to the front end of the tubular shaft 52 so that the screw 29 may be rotated through the medium of the connections described to adjust the carriage 30 in horizontal connection, and thereby place the drive belt 26 under proper ten sion. The feed screw 45 is. of course ad justedf'v ertically with the bracket or support 33, but the coupling shaft 49 and coupling or adjusting'shaft comprising the sections 51' and 52 maintain proper connections between the hand-wheel 54 and the adjustthe latter. a

By'means of the adjustment described the belt may be. easily and quickly adjusted to drive the spindle at different speeds. Inasmuch as the counter-shaft 5 extends longitudinally' of the machine, it may be eming screw' 45 in all the difierentpositions of ployed to drive the separate spindles of a multiple drill. Preferably, the vertically ad ustable support or bracket 33. is provided with a series of marks or lugs55' which.,co-.

operate with a lug 56 on the machine frame, I

to indicate the different adjusted positions of, the support and of the idlers carried thereby.

It is obvious that changes may be made in the details setforth'without departure from the claims. I v

I claim as my invention 2- combination with th'e'frame, counter-shaft the essentials of the invention as defined in and. spindle, of a driving pulleyon said shaft, a multiple-stepped, driven pulley on.

said spindle, a quarter-turn belt connecting said pulleys, delivery and return idlers for said belt, a vertically shiftable support on said frame, a horizontally sliding carriage on said support and whereon said idlers are mounted, means for adjusting said support and said carriage to tension the belt and cause the same to track with any one of the steps of said driven pulley, and vertical rollersfor guiding the portions of the belt between said driven pulley and said idlers in. the different adjusted positions of the latter,

substantially as described.

2. In a machine of the class described, the Y combination with'the frame, counter-shaft and spindle, of a driving pulley on said shaft, a multiple-stepped, driven pulley on said spindle, a quarter-'turnb'elt connecting.

said pulleys, delivery and returnidlers for said belt, a vertically shiftable support on saidv frame, a horizontally sliding carriage on said support and whereon said idlers are mounted, means for adjusting said support and said carriage to tension the belt and cause the same to track with any one of the steps of said driven pulley,- and a vertical guide roller for causing the belt to' track'- with said return idler, substantially as described.

3. In a machine of the class described, the combination with the frame, counter-shaft and spindle, of a driving pulley on said shaft, a multiple-stepped driven pulley on said spindle, a quarter-turn belt connecting said ulleys, delivery and return idlers for said elt, a vertically shiftable support on said frame, a horizontally sliding carriage on said support and whereon said idlers are mounted, means for adjusting said support and said carriage to tension the belt and cause the same to track with any one of the steps of said driven pulley, and vertical rollers on the machine frame for guiding the portions of the belt between said stepped pulleys and said idlers, substantially as described.

4. In a machine of the class described, the combination with a counter-shaft and spindle, of a drive pulley on said shaft, a multiple-stepped driven pulley on said spindle, a quarter-turn belt connecting said pulleys, delivery and return idlers, means for adjusting said idlers vertically to cause said belt to track with any one of the steps of said driven pulley, means for adjusting the tension of the belt, and vertical rollers for guiding the portions of the belt between said idlers and said stepped pulley, substantially as described.

5. In a machine of the class described, the combination with a counter-shaft and spindle, of a drive pulley on said shaft, a multiple-stepped driven pulley on said spindle, a quarter-turn belt connecting said pulleys, delivery and return idlers, means for adjusting said idlers vertically to cause said belt to track with any one of the steps of said driven pulley, means for adjusting the tension of the belt, and a vertical guide roller for causing the belt to track with said return idler, substantially as described.

6. In a machine of the class described, the combination with a counter-shaft and spindle, of a drive pulley on said shaft, a multiple-stepped driven pulley on said spindle, a quarter-turn belt connecting said pulleys, delivery and return idlers, means for adjusting said idlers vertically to cause said belt to track with any one of the steps of said driven pulley, means for adjusting the tension of the belt, a vertical roller on the frame for guiding the portion of the belt betweens'a'id stepped pulley and said return idler, substantially as described.

7.- In a machine of the class described, the

combination with the frame, of a vertical spindle at the front of the machine frame, a horizontal counter-shaft at the rear thereof, a drive pulley on said shaft, a multiplestepped, driven pulley on said spindle, a quarter-turn belt connecting said pulleys, a support mounted at the upper back portion of the machine frame, delivery and return idlers for said belt mounted on said support, a screw for vertically adjusting said support to cause said belt to track with any one of the steps of said driven pulley, a horizontal adjusting shaft journaled on the machine frame and provided with a hand wheel on its outer end and beveled gears connecting said adjusting shaft and said screw, substantially as described.

8. In a machine of the class described, the combination with the frame, of a vertical spindle at the front of the machine frame, a horizontal counter-shaft at the rear there of, a drive pulley on said shaft, a multiplestepped driven pulley on said spindle, a quarter-turn belt connecting said pulleys, a support mounted at the upper back portion of the machine frame, delivery and return idlers for said belt mounted on said support, means for adjusting said support vertically to cause the belt to track with any one of the steps of said driven pulley, means for adjusting an idler to tension the belt, handwheels at the front of the machine frame a and connections between said hand-wheels and said separate adjusting means, substantially as described.

9. In a machine of the class described, the combination with the frame, of a vertical spindle at the front of the machine frame, a horizontal counter-shaft at the rear thereof, a drive pulley on 'said shaft, amultiplestepped, driven pulley on said spindle, a quarter-turn belt connecting said pulleys, a support mounted at the upper back portion of the machine frame, delivery and return idlers for said belt mounted on said support, means for adjusting said support vertically to causethe belt to track with any one of the steps of said driven pulley, a horizontal adjusting screw on said support to tension the belt, a hand-wheel mounted at the front of the machine frame, and a coupling shaft connected by universal joints to said hand-wheel and said screw, substantially as described.

10. In a machine of the class described, the combination with the machine frame, of a spindle at the upper front portion of the frame, a multiple-stepped, driven pulley thereon, a horizontal counter-shaft on the lower rear portion of the frame, a drive pulley thereon, a quarter-turn belt connecting said pulleys, a vertically movable support at the upper rear portion of the frame, at the front of the machine frame and coil a horizontally sliding carriage on said supnected to said screws, substantially as deport, delivery and return idlers for the belt scribed. i mounted on said carriage, a vertical screw JOHN G. HEY. 5 on the frame for adjusting said support, a Witnesses: y

horizontal screw on said support for adjust- A. R. CRosMAN, ing said carriage, and hand-Wheels mounted J. G. ANDERSON.

Copies 01' this patent may be obtained for five cents each, by addressing the Gominissioner oflatents,

Washington, D. O. I 

